Re: Notifier chains are unsafe
From: Herbert Xu
Date: Wed Oct 26 2005 - 21:47:53 EST
Andreas Kleen <ak@xxxxxxx> wrote:
> Am Mi 26.10.2005 02:01 schrieb Chandra Seetharaman
> <sekharan@xxxxxxxxxx>:
>
>> > Better would be likely to use RCU.
>>
>> RCU will be a problem if the registered notifiers need to block.
> ?
> Actually blocking should be ok, as long as the blocking notifier doesn't
> unregister
> itself. The current next pointer will be always reloaded after the
> blocking.
Blocking would be OK as long as you reference count the objects.
--
Visit Openswan at http://www.openswan.org/
Email: Herbert Xu ~{PmV>HI~} <herbert@xxxxxxxxxxxxxxxxxxx>
Home Page: http://gondor.apana.org.au/~herbert/
PGP Key: http://gondor.apana.org.au/~herbert/pubkey.txt
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/